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| 1 | <?php |
| 2 | |
| 3 | namespace Flow\Block; |
| 4 | |
| 5 | use Flow\Container; |
| 6 | use Flow\Conversion\Utils; |
| 7 | use Flow\Data\ManagerGroup; |
| 8 | use Flow\Exception\InvalidInputException; |
| 9 | use Flow\FlowActions; |
| 10 | use Flow\Model\AbstractRevision; |
| 11 | use Flow\Model\Workflow; |
| 12 | use Flow\RevisionActionPermissions; |
| 13 | use IContextSource; |
| 14 | use MediaWiki\Output\OutputPage; |
| 15 | |
| 16 | abstract class AbstractBlock implements Block { |
| 17 | |
| 18 | /** @var Workflow */ |
| 19 | protected $workflow; |
| 20 | /** @var ManagerGroup */ |
| 21 | protected $storage; |
| 22 | |
| 23 | /** @var IContextSource */ |
| 24 | protected $context; |
| 25 | /** @var array|null */ |
| 26 | protected $submitted = null; |
| 27 | /** @var array */ |
| 28 | protected $errors = []; |
| 29 | |
| 30 | /** |
| 31 | * @var string|null The commitable action being submitted, or null |
| 32 | * for read-only actions. |
| 33 | */ |
| 34 | protected $action; |
| 35 | |
| 36 | /** @var RevisionActionPermissions */ |
| 37 | protected $permissions; |
| 38 | |
| 39 | /** |
| 40 | * A list of supported post actions |
| 41 | * @var array |
| 42 | */ |
| 43 | protected $supportedPostActions = []; |
| 44 | |
| 45 | /** |
| 46 | * A list of supported get actions |
| 47 | * @var array |
| 48 | */ |
| 49 | protected $supportedGetActions = []; |
| 50 | |
| 51 | /** |
| 52 | * Templates for each view actions |
| 53 | * @var string[] |
| 54 | */ |
| 55 | protected $templates = []; |
| 56 | |
| 57 | public function __construct( Workflow $workflow, ManagerGroup $storage ) { |
| 58 | $this->workflow = $workflow; |
| 59 | $this->storage = $storage; |
| 60 | } |
| 61 | |
| 62 | /** |
| 63 | * Called by $this->onSubmit to populate $this->errors based |
| 64 | * on $this->action and $this->submitted. |
| 65 | */ |
| 66 | abstract protected function validate(); |
| 67 | |
| 68 | /** |
| 69 | * @inheritDoc |
| 70 | */ |
| 71 | abstract public function commit(); |
| 72 | |
| 73 | /** |
| 74 | * @param IContextSource $context |
| 75 | * @param string $action |
| 76 | */ |
| 77 | public function init( IContextSource $context, $action ) { |
| 78 | $this->context = $context; |
| 79 | $this->action = $action; |
| 80 | $this->permissions = new RevisionActionPermissions( Container::get( 'flow_actions' ), $context->getUser() ); |
| 81 | } |
| 82 | |
| 83 | /** |
| 84 | * @return IContextSource |
| 85 | */ |
| 86 | public function getContext() { |
| 87 | return $this->context; |
| 88 | } |
| 89 | |
| 90 | /** |
| 91 | * Returns true if the block can submit the requested action, or false |
| 92 | * otherwise. |
| 93 | * |
| 94 | * @param string $action |
| 95 | * @return bool |
| 96 | */ |
| 97 | public function canSubmit( $action ) { |
| 98 | return in_array( $this->getActionName( $action ), $this->supportedPostActions ); |
| 99 | } |
| 100 | |
| 101 | /** |
| 102 | * Returns true if the block can render the requested action, or false |
| 103 | * otherwise. |
| 104 | * |
| 105 | * @param string $action |
| 106 | * @return bool |
| 107 | */ |
| 108 | public function canRender( $action ) { |
| 109 | return // GET actions can be rendered |
| 110 | in_array( $this->getActionName( $action ), $this->supportedGetActions ) || |
| 111 | // POST actions are usually redirected to 'view' after successfully |
| 112 | // completing the request, but can also be rendered (e.g. to show |
| 113 | // error message after unsuccessful submission) |
| 114 | $this->canSubmit( $action ); |
| 115 | } |
| 116 | |
| 117 | /** |
| 118 | * Get the template name for a specific action or an array of template |
| 119 | * for all possible view actions in this block |
| 120 | * |
| 121 | * @param string|null $action |
| 122 | * @return string|array |
| 123 | * @throws InvalidInputException |
| 124 | */ |
| 125 | public function getTemplate( $action = null ) { |
| 126 | if ( $action === null ) { |
| 127 | return $this->templates; |
| 128 | } |
| 129 | if ( !isset( $this->templates[$action] ) ) { |
| 130 | throw new InvalidInputException( 'Template is not defined for action: ' . $action, 'invalid-input' ); |
| 131 | } |
| 132 | return $this->templates[$action]; |
| 133 | } |
| 134 | |
| 135 | /** |
| 136 | * @param array $data |
| 137 | * @return bool|null true when accepted, false when not accepted. |
| 138 | * null when this action does not support submission. |
| 139 | */ |
| 140 | public function onSubmit( array $data ) { |
| 141 | if ( !$this->canSubmit( $this->action ) ) { |
| 142 | return null; |
| 143 | } |
| 144 | |
| 145 | $this->submitted = $data; |
| 146 | $this->validate(); |
| 147 | |
| 148 | return !$this->hasErrors(); |
| 149 | } |
| 150 | |
| 151 | public function wasSubmitted() { |
| 152 | return $this->submitted !== null; |
| 153 | } |
| 154 | |
| 155 | /** |
| 156 | * Checks if any errors have occurred in the block (no argument), or if a |
| 157 | * specific error has occurred (argument being the error type) |
| 158 | * |
| 159 | * @param string|null $type |
| 160 | * @return bool |
| 161 | */ |
| 162 | public function hasErrors( $type = null ) { |
| 163 | if ( $type === null ) { |
| 164 | return (bool)$this->errors; |
| 165 | } |
| 166 | return isset( $this->errors[$type] ); |
| 167 | } |
| 168 | |
| 169 | /** |
| 170 | * Returns an array of all error types encountered in this block. The values |
| 171 | * in the returned array can be used to pass to getErrorMessage() or |
| 172 | * getErrorExtra() to respectively fetch the specific error message or |
| 173 | * additional details. |
| 174 | * |
| 175 | * @return array |
| 176 | */ |
| 177 | public function getErrors() { |
| 178 | return array_keys( $this->errors ); |
| 179 | } |
| 180 | |
| 181 | /** |
| 182 | * @param string $type |
| 183 | * @return \Message |
| 184 | */ |
| 185 | public function getErrorMessage( $type ) { |
| 186 | return $this->errors[$type]['message'] ?? null; |
| 187 | } |
| 188 | |
| 189 | /** |
| 190 | * @param string $type |
| 191 | * @return mixed |
| 192 | */ |
| 193 | public function getErrorExtra( $type ) { |
| 194 | return $this->errors[$type]['extra'] ?? null; |
| 195 | } |
| 196 | |
| 197 | /** |
| 198 | * @param string $type |
| 199 | * @param \Message $message |
| 200 | * @param mixed|null $extra |
| 201 | */ |
| 202 | public function addError( $type, \Message $message, $extra = null ) { |
| 203 | $this->errors[$type] = [ |
| 204 | 'message' => $message, |
| 205 | 'extra' => $extra, |
| 206 | ]; |
| 207 | } |
| 208 | |
| 209 | public function getWorkflow() { |
| 210 | return $this->workflow; |
| 211 | } |
| 212 | |
| 213 | public function getWorkflowId() { |
| 214 | return $this->workflow->getId(); |
| 215 | } |
| 216 | |
| 217 | public function getStorage() { |
| 218 | return $this->storage; |
| 219 | } |
| 220 | |
| 221 | /** |
| 222 | * Given a certain action name, this returns the valid action name. This is |
| 223 | * meant for BC compatibility with renamed actions. |
| 224 | * |
| 225 | * @param string $action |
| 226 | * @return string |
| 227 | */ |
| 228 | public function getActionName( $action ) { |
| 229 | // BC for renamed actions |
| 230 | /** @var FlowActions $actions */ |
| 231 | $actions = Container::get( 'flow_actions' ); |
| 232 | $alias = $actions->getValue( $action ); |
| 233 | if ( is_string( $alias ) ) { |
| 234 | // All proper actions return arrays, but aliases return a string |
| 235 | $action = $alias; |
| 236 | } |
| 237 | |
| 238 | return $action; |
| 239 | } |
| 240 | |
| 241 | /** |
| 242 | * Run through AbuseFilter and friends. |
| 243 | * @todo Having to call spamFilter in each place that creates a revision |
| 244 | * is error-prone. |
| 245 | * |
| 246 | * @param AbstractRevision|null $old null when $new is first revision |
| 247 | * @param AbstractRevision $new |
| 248 | * @return bool True when content is allowed by spam filter |
| 249 | */ |
| 250 | protected function checkSpamFilters( ?AbstractRevision $old, AbstractRevision $new ) { |
| 251 | /** @var \Flow\SpamFilter\Controller $spamFilter */ |
| 252 | $spamFilter = Container::get( 'controller.spamfilter' ); |
| 253 | $status = $spamFilter->validate( $this->context, $new, $old, $this->workflow->getArticleTitle(), $this->workflow->getOwnerTitle() ); |
| 254 | if ( $status->isOK() ) { |
| 255 | return true; |
| 256 | } |
| 257 | |
| 258 | $message = $status->getMessage(); |
| 259 | |
| 260 | $details = $status->getValue(); |
| 261 | |
| 262 | $this->addError( 'spamfilter', $message, [ |
| 263 | 'messageKey' => $message->getKey(), |
| 264 | 'details' => $details, |
| 265 | ] ); |
| 266 | return false; |
| 267 | } |
| 268 | |
| 269 | /** |
| 270 | * @return string The new edit token |
| 271 | */ |
| 272 | public function getEditToken() { |
| 273 | return $this->context->getUser()->getEditToken(); |
| 274 | } |
| 275 | |
| 276 | /** |
| 277 | * @param OutputPage $out |
| 278 | */ |
| 279 | public function setPageTitle( OutputPage $out ) { |
| 280 | if ( $out->getPageTitle() ) { |
| 281 | // Don't override page title if another block has already set it. |
| 282 | // If this should *really* be done, the specific block extending |
| 283 | // this AbstractBlock should just implement this itself ;) |
| 284 | return; |
| 285 | } |
| 286 | |
| 287 | $title = $this->workflow->getArticleTitle(); |
| 288 | $convertedTitle = Utils::getConvertedTitle( $title ); |
| 289 | $out->setPageTitle( $convertedTitle ); |
| 290 | } |
| 291 | } |